Subtract 21/70 from 14/84
14/84 - 21/70 is -2/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
14/84 = 14 × 5/84 × 5 = 70/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
21/70 = 21 × 6/70 × 6 = 126/420 - Subtract the two like fractions:
70/420 - 126/420 = 70 - 126/420 = -56/420 - After reducing the fraction, the answer is -2/15
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